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cli_spec.rb
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cli_spec.rb
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# frozen_string_literal: true
require 'timeout'
RSpec.describe RuboCop::CLI, :isolated_environment do
subject(:cli) { described_class.new }
include_context 'cli spec behavior'
context 'when interrupted' do
it 'returns 130' do
allow_any_instance_of(RuboCop::Runner).to receive(:aborting?).and_return(true)
create_empty_file('example.rb')
expect(cli.run(['example.rb'])).to eq(130)
end
end
context 'when given a file/directory that is not under the current dir' do
shared_examples 'checks Rakefile' do
it 'checks a Rakefile but Style/FileName does not report' do
create_file('Rakefile', <<~RUBY)
# frozen_string_literal: true
x = 1
RUBY
create_empty_file('other/empty')
Dir.chdir('other') { expect(cli.run(['--format', 'simple', checked_path])).to eq(1) }
expect($stdout.string).to eq(<<~RESULT)
== #{abs('Rakefile')} ==
W: 3: 1: Lint/UselessAssignment: Useless assignment to variable - x.
1 file inspected, 1 offense detected
RESULT
end
end
context 'and the directory is absolute' do
let(:checked_path) { abs('..') }
include_examples 'checks Rakefile'
end
context 'and the directory is relative' do
let(:checked_path) { '..' }
include_examples 'checks Rakefile'
end
context 'and the Rakefile path is absolute' do
let(:checked_path) { abs('../Rakefile') }
include_examples 'checks Rakefile'
end
context 'and the Rakefile path is relative' do
let(:checked_path) { '../Rakefile' }
include_examples 'checks Rakefile'
end
end
context 'when lines end with CR+LF' do
it 'reports an offense' do
create_file('example.rb', <<~RUBY)
x = 0\r
puts x\r
RUBY
# Make Style/EndOfLine give same output regardless of platform.
create_file('.rubocop.yml', <<~YAML)
EndOfLine:
EnforcedStyle: lf
YAML
result = cli.run(['--format', 'simple', 'example.rb'])
expect(result).to eq(1)
expect($stdout.string)
.to eq(<<~RESULT)
== example.rb ==
C: 1: 1: Layout/EndOfLine: Carriage return character detected.
C: 1: 1: [Correctable] Style/FrozenStringLiteralComment: Missing frozen string literal comment.
1 file inspected, 2 offenses detected, 1 offense autocorrectable
RESULT
expect($stderr.string).to eq(<<~RESULT)
#{abs('.rubocop.yml')}: Warning: no department given for EndOfLine.
RESULT
end
end
context 'when checking a correct file' do
it 'returns 0' do
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
x = 0
puts x
RUBY
expect(cli.run(['--format', 'simple', 'example.rb'])).to eq(0)
expect($stdout.string)
.to eq(<<~RESULT)
1 file inspected, no offenses detected
RESULT
end
context 'when super is used with a block' do
it 'still returns 0' do
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
# this is a class
class Thing
def super_with_block
super { |response| }
end
def and_with_args
super(arg1, arg2) { |response| }
end
end
RUBY
create_file('.rubocop.yml', <<~YAML)
Lint/UnusedBlockArgument:
IgnoreEmptyBlocks: true
YAML
expect(cli.run(['--format', 'simple', 'example.rb'])).to eq(0)
expect($stdout.string)
.to eq(<<~RESULT)
1 file inspected, no offenses detected
RESULT
end
end
end
it 'checks a given file with faults and returns 1' do
create_file('example.rb', ['# frozen_string_literal: true', '', 'x = 0 ', 'puts x'])
expect(cli.run(['--format', 'simple', 'example.rb'])).to eq(1)
expect($stdout.string)
.to eq <<~RESULT
== example.rb ==
C: 3: 6: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected.
1 file inspected, 1 offense detected, 1 offense autocorrectable
RESULT
end
it 'registers an offense for a syntax error' do
create_file('example.rb', ['class Test', 'en'])
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stderr.string).to eq ''
expect($stdout.string)
.to eq(["#{abs('example.rb')}:3:1: E: Lint/Syntax: unexpected " \
'token $end (Using Ruby 2.6 parser; configure using ' \
'`TargetRubyVersion` parameter, under `AllCops`)',
''].join("\n"))
end
it 'registers an offense for Parser warnings' do
create_file('example.rb', [
'# frozen_string_literal: true',
'',
'puts *test',
'if a then b else c end'
])
aggregate_failures('CLI output') do
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stdout.string)
.to eq(["#{abs('example.rb')}:3:6: W: [Correctable] Lint/AmbiguousOperator: " \
'Ambiguous splat operator. Parenthesize the method arguments ' \
"if it's surely a splat operator, or add a whitespace to the " \
'right of the `*` if it should be a multiplication.',
"#{abs('example.rb')}:4:1: C: [Correctable] Style/OneLineConditional: " \
'Favor the ternary operator (`?:`) or multi-line constructs over ' \
'single-line `if/then/else/end` constructs.',
''].join("\n"))
end
end
it 'can process a file with an invalid UTF-8 byte sequence' do
create_file('example.rb', ["# #{'f9'.hex.chr}#{'29'.hex.chr}"])
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stderr.string).to eq ''
expect($stdout.string)
.to eq(<<~RESULT)
#{abs('example.rb')}:1:1: F: Lint/Syntax: Invalid byte sequence in utf-8.
RESULT
end
context 'when errors are raised while processing files due to bugs' do
let(:errors) { ['An error occurred while Encoding cop was inspecting file.rb.'] }
before { allow_any_instance_of(RuboCop::Runner).to receive(:errors).and_return(errors) }
it 'displays an error message to stderr' do
cli.run([])
expect($stderr.string).to include('1 error occurred:').and include(errors.first)
end
end
if RUBY_ENGINE == 'ruby' && !RuboCop::Platform.windows?
# NOTE: It has been tested for parallelism with `--debug` option.
# In other words, even if no option is specified, it will be parallelized by default.
describe 'when parallel static by default' do
context 'when specifying `--debug` option only`' do
it 'fails with an error message' do
create_file('example1.rb', <<~RUBY)
# frozen_string_literal: true
puts 'hello'
RUBY
expect(cli.run(['--debug'])).to eq(0)
expect($stdout.string).to include('Use parallel by default.')
end
end
context 'when specifying `--debug` and `-a` options`' do
it 'uses parallel inspection when correcting the file' do
create_file('example1.rb', <<~RUBY)
# frozen_string_literal: true
puts "hello"
RUBY
expect(cli.run(['--debug', '-a'])).to eq(0)
expect($stdout.string).to include('Use parallel by default.')
expect(File.read('example1.rb')).to eq(<<~RUBY)
# frozen_string_literal: true
puts 'hello'
RUBY
end
end
context 'when setting `UseCache: true`' do
it 'fails with an error message' do
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
puts 'hello'
RUBY
create_file('.rubocop.yml', <<~YAML)
AllCops:
UseCache: true
YAML
expect(cli.run(['--debug'])).to eq(0)
expect($stdout.string).to include('Use parallel by default.')
end
end
context 'when setting `UseCache: false`' do
it 'fails with an error message' do
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
puts 'hello'
RUBY
create_file('.rubocop.yml', <<~YAML)
AllCops:
UseCache: false
YAML
expect(cli.run(['--debug'])).to eq(0)
expect($stdout.string).not_to include('Use parallel by default.')
end
end
end
context 'when a directory is named `*`' do
before do
FileUtils.mkdir('*')
end
after do
FileUtils.rmdir('*')
end
it 'does not crash' do
expect(cli.run([])).to eq(0)
end
end
end
describe 'rubocop:disable comment' do
it 'can disable all cops in a code section' do
src = ['# rubocop:disable all',
'#' * 130,
'x(123456)',
'y("123")',
'def func',
' # rubocop: enable Layout/LineLength,Style/StringLiterals',
" #{'#' * 130}",
' x(123456)',
' y("123")',
'end']
create_file('example.rb', src)
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
# all cops were disabled, then 2 were enabled again, so we
# should get 2 offenses reported.
expect($stdout.string).to eq(<<~RESULT)
#{abs('example.rb')}:7:121: C: Layout/LineLength: Line is too long. [132/120]
#{abs('example.rb')}:9:5: C: [Correctable] Style/StringLiterals: Prefer single-quoted strings when you don't need string interpolation or special symbols.
RESULT
end
describe 'Specify `--init` option to `rubocop` command' do
context 'when .rubocop.yml does not exist' do
it 'generate a .rubocop.yml file' do
expect(cli.run(['--init'])).to eq(0)
expect($stdout.string).to start_with('Writing new .rubocop.yml to')
expect(File.read('.rubocop.yml')).to eq(<<~YAML)
# The behavior of RuboCop can be controlled via the .rubocop.yml
# configuration file. It makes it possible to enable/disable
# certain cops (checks) and to alter their behavior if they accept
# any parameters. The file can be placed either in your home
# directory or in some project directory.
#
# RuboCop will start looking for the configuration file in the directory
# where the inspected file is and continue its way up to the root directory.
#
# See https://docs.rubocop.org/rubocop/configuration
YAML
end
end
context 'when .rubocop.yml already exists' do
it 'fails with an error message' do
create_empty_file('.rubocop.yml')
expect(cli.run(['--init'])).to eq(2)
expect($stderr.string).to start_with('.rubocop.yml already exists at')
end
end
end
context 'when --autocorrect-all is given' do
it 'does not trigger RedundantCopDisableDirective due to lines moving around' do
src = ['a = 1 # rubocop:disable Lint/UselessAssignment']
create_file('example.rb', src)
create_file('.rubocop.yml', <<~YAML)
Style/FrozenStringLiteralComment:
Enabled: true
EnforcedStyle: always
Layout/EmptyLineAfterMagicComment:
Enabled: false
YAML
expect(cli.run(['--format', 'offenses', '-A', 'example.rb'])).to eq(0)
expect($stdout.string).to eq(<<~RESULT)
1 Style/FrozenStringLiteralComment
--
1 Total in 1 files
RESULT
expect(File.read('example.rb'))
.to eq(<<~RUBY)
# frozen_string_literal: true
a = 1 # rubocop:disable Lint/UselessAssignment
RUBY
end
end
it 'can disable selected cops in a code section' do
create_file('example.rb',
['# frozen_string_literal: true',
'',
'# rubocop:disable Style/LineLength,' \
'Style/NumericLiterals,Style/StringLiterals',
'#' * 130,
'x(123456)',
'y("123")',
'def func',
' # rubocop: enable Layout/LineLength, ' \
'Style/StringLiterals',
" #{'#' * 130}",
' x(123456)',
' y("123")',
' # rubocop: enable Style/NumericLiterals',
'end'])
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stderr.string)
.to eq(['example.rb: Style/LineLength has the wrong ' \
'namespace - should be Layout',
''].join("\n"))
# 2 real cops were disabled, and 1 that was incorrect
# 2 real cops was enabled, but only 1 had been disabled correctly
expect($stdout.string).to eq(<<~RESULT)
#{abs('example.rb')}:8:21: W: [Correctable] Lint/RedundantCopEnableDirective: Unnecessary enabling of Layout/LineLength.
#{abs('example.rb')}:9:121: C: Layout/LineLength: Line is too long. [132/120]
#{abs('example.rb')}:11:5: C: [Correctable] Style/StringLiterals: Prefer single-quoted strings when you don't need string interpolation or special symbols.
RESULT
end
it 'can disable all cops on a single line' do
create_file('example.rb', 'y("123", 123456) # rubocop:disable all')
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(0)
expect($stdout.string.empty?).to be(true)
end
it 'can disable selected cops on a single line' do
create_file('example.rb',
['# frozen_string_literal: true',
'',
"#{'a' * 130} # rubocop:disable Layout/LineLength",
'#' * 130,
'y("123", 123456) # rubocop:disable Style/StringLiterals,' \
'Style/NumericLiterals'])
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stdout.string)
.to eq(<<~RESULT)
#{abs('example.rb')}:4:121: C: Layout/LineLength: Line is too long. [130/120]
RESULT
end
context 'without using namespace' do
it 'can disable selected cops on a single line but prints a warning' do
create_file('example.rb',
['# frozen_string_literal: true',
'',
"#{'a' * 130} # rubocop:disable LineLength",
'#' * 130,
'y("123") # rubocop:disable StringLiterals'])
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stderr.string).to eq(<<~OUTPUT)
#{abs('example.rb')}: Warning: no department given for LineLength. Run `rubocop -a --only Migration/DepartmentName` to fix.
#{abs('example.rb')}: Warning: no department given for StringLiterals. Run `rubocop -a --only Migration/DepartmentName` to fix.
OUTPUT
expect($stdout.string)
.to eq(<<~RESULT)
#{abs('example.rb')}:3:150: C: [Correctable] Migration/DepartmentName: Department name is missing.
#{abs('example.rb')}:4:121: C: Layout/LineLength: Line is too long. [130/120]
#{abs('example.rb')}:5:28: C: [Correctable] Migration/DepartmentName: Department name is missing.
RESULT
end
end
context 'when not necessary' do
it 'causes an offense to be reported' do
create_file('example.rb',
['# frozen_string_literal: true',
'',
'#' * 130,
'# rubocop:disable all',
"#{'a' * 10} # rubocop:disable Layout/LineLength,Metrics/ClassLength",
'y(123) # rubocop:disable all',
'# rubocop:enable all'])
expect(cli.run(['--format', 'emacs', 'example.rb'])).to eq(1)
expect($stderr.string).to eq('')
expect($stdout.string).to eq(<<~RESULT)
#{abs('example.rb')}:3:121: C: Layout/LineLength: Line is too long. [130/120]
#{abs('example.rb')}:4:1: W: [Correctable] Lint/RedundantCopDisableDirective: Unnecessary disabling of all cops.
#{abs('example.rb')}:5:12: W: [Correctable] Lint/RedundantCopDisableDirective: Unnecessary disabling of `Layout/LineLength`, `Metrics/ClassLength`.
#{abs('example.rb')}:6:8: W: [Correctable] Lint/RedundantCopDisableDirective: Unnecessary disabling of all cops.
RESULT
end
context 'and there are no other offenses' do
it 'exits with error code' do
create_file('example.rb', "#{'a' * 10} # rubocop:disable LineLength")
expect(cli.run(['example.rb'])).to eq(1)
end
end
context 'when using `rubocop:disable` line comment for `Lint/EmptyBlock`' do
it 'does not register an offense for `Lint/RedundantCopDisableDirective`' do
create_file('.rubocop.yml', <<~YAML)
Lint/EmptyBlock:
Enabled: true
Lint/RedundantCopDisableDirective:
Enabled: true
YAML
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
assert_equal nil, combinator {}.call # rubocop:disable Lint/EmptyBlock'
RUBY
expect(cli.run(['example.rb'])).to eq(0)
expect($stdout.string).to include('1 file inspected, no offenses detected')
end
end
context 'when using `rubocop:disable` line comment for `Style/RedundantInitialize`' do
it 'does not register an offense for `Lint/RedundantCopDisableDirective`' do
create_file('.rubocop.yml', <<~YAML)
Style/RedundantInitialize:
Enabled: true
Lint/RedundantCopDisableDirective:
Enabled: true
YAML
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
Class.new do
def initialize; end # rubocop:disable Style/RedundantInitialize
end
RUBY
expect(cli.run(['example.rb'])).to eq(0)
expect($stdout.string).to include('1 file inspected, no offenses detected')
end
end
shared_examples 'RedundantCopDisableDirective not run' do |state, config|
context "and RedundantCopDisableDirective is #{state}" do
it 'does not report RedundantCopDisableDirective offenses' do
create_file('example.rb',
['# frozen_string_literal: true',
'',
'#' * 130,
'# rubocop:disable all',
"#{'a' * 10} # rubocop:disable LineLength,ClassLength",
'y(123) # rubocop:disable all'])
create_file('.rubocop.yml', config)
expect(cli.run(['--format', 'emacs'])).to eq(1)
expect($stderr.string).to eq(<<~OUTPUT)
#{abs('example.rb')}: Warning: no department given for LineLength. Run `rubocop -a --only Migration/DepartmentName` to fix.
#{abs('example.rb')}: Warning: no department given for ClassLength. Run `rubocop -a --only Migration/DepartmentName` to fix.
OUTPUT
expect($stdout.string)
.to eq(<<~RESULT)
#{abs('example.rb')}:3:121: C: Layout/LineLength: Line is too long. [130/120]
RESULT
end
end
end
include_examples 'RedundantCopDisableDirective not run',
'individually disabled', <<~YAML
Lint/RedundantCopDisableDirective:
Enabled: false
YAML
include_examples 'RedundantCopDisableDirective not run',
'individually excluded', <<~YAML
Lint/RedundantCopDisableDirective:
Exclude:
- example.rb
YAML
include_examples 'RedundantCopDisableDirective not run',
'disabled through department', <<~YAML
Lint:
Enabled: false
YAML
end
end
it 'finds a file with no .rb extension but has a shebang line' do
allow_any_instance_of(File::Stat).to receive(:executable?).and_return(true)
create_file('example', ['#!/usr/bin/env ruby', 'x = 0', 'puts x'])
create_file('.rubocop.yml', <<~YAML)
Style/FrozenStringLiteralComment:
Enabled: false
YAML
expect(cli.run(%w[--format simple])).to eq(0)
expect($stdout.string).to eq(['', '1 file inspected, no offenses detected', ''].join("\n"))
end
it 'does not register any offenses for an empty file' do
create_empty_file('example.rb')
expect(cli.run(%w[--format simple])).to eq(0)
expect($stdout.string).to eq(['', '1 file inspected, no offenses detected', ''].join("\n"))
end
describe 'style guide only usage' do
context 'via the cli option' do
describe '--only-guide-cops' do
it 'skips cops that have no link to a style guide' do
create_file('example.rb', 'raise')
create_file('.rubocop.yml', <<~YAML)
Layout/LineLength:
Enabled: true
StyleGuide: ~
Max: 2
YAML
expect(cli.run(['--format', 'simple', '--only-guide-cops', 'example.rb'])).to eq(0)
end
it 'runs cops for rules that link to a style guide' do
create_file('example.rb', 'raise')
create_file('.rubocop.yml', <<~YAML)
Layout/LineLength:
Enabled: true
StyleGuide: "http://an.example/url"
Max: 2
YAML
expect(cli.run(['--format', 'simple', '--only-guide-cops', 'example.rb'])).to eq(1)
expect($stdout.string)
.to eq(<<~RESULT)
== example.rb ==
C: 1: 3: Layout/LineLength: Line is too long. [5/2]
1 file inspected, 1 offense detected
RESULT
end
it 'overrides configuration of AllCops/StyleGuideCopsOnly' do
create_file('example.rb', 'raise')
create_file('.rubocop.yml', <<~YAML)
AllCops:
StyleGuideCopsOnly: false
Layout/LineLength:
Enabled: true
StyleGuide: ~
Max: 2
YAML
expect(cli.run(['--format', 'simple', '--only-guide-cops', 'example.rb'])).to eq(0)
end
end
end
context 'via the config' do
before do
create_file('example.rb', <<~RUBY)
if foo and bar
do_something
end
RUBY
create_file('.rubocop.yml', <<~YAML)
AllCops:
StyleGuideCopsOnly: #{guide_cops_only}
DisabledByDefault: #{disabled_by_default}
Layout/LineLength:
Enabled: true
StyleGuide: ~
Max: 2
Style/FrozenStringLiteralComment:
Enabled: false
YAML
end
describe 'AllCops/StyleGuideCopsOnly' do
let(:disabled_by_default) { 'false' }
context 'when it is true' do
let(:guide_cops_only) { 'true' }
it 'skips cops that have no link to a style guide' do
expect(cli.run(['--format', 'offenses', 'example.rb'])).to eq(1)
expect($stdout.string).to eq(<<~RESULT)
1 Style/AndOr
--
1 Total in 1 files
RESULT
end
end
context 'when it is false' do
let(:guide_cops_only) { 'false' }
it 'runs cops for rules regardless of any link to the style guide' do
expect(cli.run(['--format', 'offenses', 'example.rb'])).to eq(1)
expect($stdout.string).to eq(<<~RESULT)
3 Layout/LineLength
1 Style/AndOr
--
4 Total in 1 files
RESULT
end
end
end
describe 'AllCops/DisabledByDefault' do
let(:guide_cops_only) { 'false' }
context 'when it is true' do
let(:disabled_by_default) { 'true' }
it 'runs only the cop configured in .rubocop.yml' do
expect(cli.run(['--format', 'offenses', 'example.rb'])).to eq(1)
expect($stdout.string).to eq(<<~RESULT)
3 Layout/LineLength
--
3 Total in 1 files
RESULT
end
end
context 'when it is false' do
let(:disabled_by_default) { 'false' }
it 'runs all cops that are enabled in default configuration' do
expect(cli.run(['--format', 'offenses', 'example.rb'])).to eq(1)
expect($stdout.string).to eq(<<~RESULT)
3 Layout/LineLength
1 Style/AndOr
--
4 Total in 1 files
RESULT
end
end
end
end
end
describe 'cops can exclude files based on config' do
it 'ignores excluded files' do
create_file('example.rb', 'x = 0')
create_file('regexp.rb', 'x = 0')
create_file('exclude_glob.rb', ['#!/usr/bin/env ruby', 'x = 0'])
create_file('dir/thing.rb', 'x = 0')
create_file('.rubocop.yml', <<~'YAML')
Lint/UselessAssignment:
Exclude:
- example.rb
- !ruby/regexp /regexp.rb\z/
- "exclude_*"
- "dir/*"
Style/FrozenStringLiteralComment:
Enabled: false
YAML
allow_any_instance_of(File::Stat).to receive(:executable?).and_return(true)
expect(cli.run(%w[--format simple])).to eq(0)
expect($stdout.string).to eq(['', '4 files inspected, no offenses detected', ''].join("\n"))
end
end
describe 'configuration from file' do
before { RuboCop::ConfigLoader.default_configuration = nil }
context 'when a value in a hash is overridden with nil' do
it 'acts as if the key/value pair was removed' do
create_file('.rubocop.yml', <<~YAML)
Style/InverseMethods:
InverseMethods:
:even?: ~
Style/CollectionMethods:
Enabled: true
PreferredMethods:
collect: ~
Style/FrozenStringLiteralComment:
Enabled: false
YAML
create_file('example.rb', 'array.collect { |e| !e.odd? }')
expect(cli.run([])).to eq(0)
end
end
context 'when configured for indented_internal_methods style indentation' do
it 'accepts indented_internal_methods style indentation' do
create_file('.rubocop.yml', <<~YAML)
Layout/IndentationConsistency:
EnforcedStyle: indented_internal_methods
Style/FrozenStringLiteralComment:
Enabled: false
YAML
create_file('example.rb', <<~RUBY)
# A feline creature
class Cat
def meow
puts('Meow!')
end
protected
def can_we_be_friends?(another_cat)
some_logic(another_cat)
end
private
def meow_at_3am?
rand < 0.8
end
end
RUBY
result = cli.run(%w[--format simple])
expect($stderr.string).to eq('')
expect(result).to eq(0)
expect($stdout.string).to eq(['', '1 file inspected, no offenses detected', ''].join("\n"))
end
%w[class module].each do |parent|
it "registers offense for normal indentation in #{parent}" do
create_file('.rubocop.yml', <<~YAML)
Layout/IndentationConsistency:
EnforcedStyle: indented_internal_methods
Style/FrozenStringLiteralComment:
Enabled: false
YAML
create_file('example.rb', <<~RUBY)
# A feline creature
#{parent} Cat
def meow
puts('Meow!')
end
protected
def can_we_be_friends?(another_cat)
some_logic(another_cat)
end
private
def meow_at_3am?
rand < 0.8
end
def meow_at_4am?
rand < 0.8
end
end
RUBY
result = cli.run(%w[--format simple])
expect($stderr.string).to eq('')
expect(result).to eq(1)
expect($stdout.string)
.to eq(<<~RESULT)
== example.rb ==
C: 9: 3: [Correctable] Layout/IndentationWidth: Use 2 (not 0) spaces for indented_internal_methods indentation.
C: 15: 3: [Correctable] Layout/IndentationWidth: Use 2 (not 0) spaces for indented_internal_methods indentation.
1 file inspected, 2 offenses detected, 2 offenses autocorrectable
RESULT
end
end
end
context 'when obsolete MultiSpaceAllowedForOperators param is used' do
it 'displays a warning' do
create_file('.rubocop.yml', <<~YAML)
Layout/SpaceAroundOperators:
MultiSpaceAllowedForOperators:
- "="
YAML
expect(cli.run([])).to eq(2)
expect($stderr.string).to include('obsolete parameter ' \
'`MultiSpaceAllowedForOperators` ' \
'(for `Layout/SpaceAroundOperators`) ' \
'found')
end
end
context 'when MultilineMethodCallIndentation is used with aligned ' \
'style and IndentationWidth parameter' do
it 'fails with an error message' do
create_file('example.rb', 'puts 1')
create_file('.rubocop.yml', <<~YAML)
Layout/MultilineMethodCallIndentation:
EnforcedStyle: aligned
IndentationWidth: 1
YAML
expect(cli.run(['example.rb'])).to eq(2)
expect($stderr.string.strip).to eq(
'Error: The `Layout/MultilineMethodCallIndentation` cop only ' \
'accepts an `IndentationWidth` configuration parameter when ' \
'`EnforcedStyle` is `indented`.'
)
end
end
context 'when MultilineOperationIndentation is used with aligned ' \
'style and IndentationWidth parameter' do
it 'fails with an error message' do
create_file('example.rb', 'puts 1')
create_file('.rubocop.yml', <<~YAML)
Layout/MultilineOperationIndentation:
EnforcedStyle: aligned
IndentationWidth: 1
YAML
expect(cli.run(['example.rb'])).to eq(2)
expect($stderr.string.strip).to eq(
'Error: The `Layout/MultilineOperationIndentation` cop only accepts ' \
'an `IndentationWidth` configuration parameter when ' \
'`EnforcedStyle` is `indented`.'
)
end
end
it 'allows the default configuration file as the -c argument' do
create_file('example.rb', <<~RUBY)
# frozen_string_literal: true
x = 0
puts x
RUBY
create_file('.rubocop.yml', [])
expect(cli.run(%w[--format simple -c .rubocop.yml])).to eq(0)
expect($stdout.string).to eq(['', '1 file inspected, no offenses detected', ''].join("\n"))
end
context 'when --force-default-config option is specified' do
shared_examples 'ignores config file' do
it 'ignores config file' do
create_file('example.rb', ['# frozen_string_literal: true', '', 'x = 0 ', 'puts x'])
create_file('.rubocop.yml', <<~YAML)
Layout/TrailingWhitespace:
Enabled: false
YAML
expect(cli.run(args)).to eq(1)
expect($stdout.string)
.to eq(<<~RESULT)
== example.rb ==
C: 3: 6: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected.
1 file inspected, 1 offense detected, 1 offense autocorrectable
RESULT
end
end
context 'when no config file specified' do
let(:args) { %w[--format simple --force-default-config] }
include_examples 'ignores config file'
end
context 'when config file specified with -c' do
let(:args) { %w[--format simple --force-default-config -c .rubocop.yml] }
include_examples 'ignores config file'
end
end
it 'displays cop names if DisplayCopNames is false' do
source = ['# frozen_string_literal: true', '', 'x = 0 ', 'puts x']
create_file('example1.rb', source)
# DisplayCopNames: false inherited from config/default.yml
create_file('.rubocop.yml', [])
create_file('dir/example2.rb', source)
create_file('dir/.rubocop.yml', <<~YAML)
AllCops:
DisplayCopNames: false
YAML
expect(cli.run(%w[--format simple])).to eq(1)
expect($stdout.string).to eq(<<~RESULT)
== dir/example2.rb ==
C: 3: 6: [Correctable] Trailing whitespace detected.
== example1.rb ==
C: 3: 6: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected.
2 files inspected, 2 offenses detected, 2 offenses autocorrectable
RESULT
end
it 'displays style guide URLs if DisplayStyleGuide is true' do
source = ['# frozen_string_literal: true', '', 'x = 0 ', 'puts x']
create_file('example1.rb', source)
# DisplayCopNames: false inherited from config/default.yml
create_file('.rubocop.yml', [])
create_file('dir/example2.rb', source)
create_file('dir/.rubocop.yml', <<~YAML)
AllCops:
DisplayStyleGuide: true
YAML
url = 'https://rubystyle.guide#no-trailing-whitespace'
expect(cli.run(%w[--format simple])).to eq(1)
expect($stdout.string).to eq(<<~RESULT)
== dir/example2.rb ==
C: 3: 6: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected. (#{url})
== example1.rb ==
C: 3: 6: [Correctable] Layout/TrailingWhitespace: Trailing whitespace detected.
2 files inspected, 2 offenses detected, 2 offenses autocorrectable
RESULT
end
it 'uses the DefaultFormatter if another formatter is not specified' do
source = ['# frozen_string_literal: true', '', 'x = 0 ', 'puts x']
create_file('example1.rb', source)
create_file('.rubocop.yml', <<~YAML)
AllCops:
DefaultFormatter: offenses
YAML
expect(cli.run([])).to eq(1)
expect($stdout.string)
.to eq(<<~RESULT)
1 Layout/TrailingWhitespace
--
1 Total in 1 files
RESULT
end
it 'finds included files' do
create_file('file.rb', 'x=0') # Included by default
create_file('example', 'x=0')
create_file('regexp', 'x=0')
create_file('vendor/bundle/ruby/2.6.0/gems/backports-3.6.8/.irbrc', 'x=0')